A gripping young adult dystopian science fiction novel by Michael Grant and the fourth installment in the Gone series.

Eight months have passed since every person over the age of fifteen mysteriously vanished from the FAYZ (Fallout Alley Youth Zone). The surviving children have endured hunger, civil war, and terrifying mutations, but a new nightmare now threatens to wipe them out.

A fast-spreading, deadly plague begins infecting the children, causing high fever, hallucinations, and death within days. At the same time, giant mutated insects emerge from the wilderness, while the sinister force known as the Darkness grows stronger and begins manipulating minds. With food supplies dwindling, trust collapsing, and the epidemic spiraling out of control, leaders like Sam Temple, Astrid, Diana, Caine, and Lana must make impossible choices to save the people they care about. As fear spreads faster than the disease itself, survival becomes more uncertain than ever.

Packed with relentless action, moral dilemmas, horror elements, and emotional stakes, Plague raises the intensity of the series while expanding the mythology of the FAYZ. It explores themes of leadership, sacrifice, fear, power, and the cost of survival.